windows: Treat settings.json as JSONC (#14944)

Before this PR, comments in `settings.json` are marked with red lines,
indicating that `"comments are not allowed in JSON."`

![Screenshot 2024-07-22
153951](https://github.com/user-attachments/assets/fbb631e8-43cf-4473-97c0-50c83c4d6ab1)


After this PR, this issue is resolved.

![Screenshot 2024-07-22
153527](https://github.com/user-attachments/assets/ee0f7877-c623-4caa-94cd-97e82f9b8945)

Release Notes:

- N/A

assets/settings/default.json

@@ -705,7 +705,7 @@
   //
   "file_types": {
     "JSON": ["flake.lock"],
-    "JSONC": ["**/.zed/**/*.json", "**/zed/**/*.json", "tsconfig.json"]
+    "JSONC": ["**/.zed/**/*.json", "**/zed/**/*.json", "**/Zed/**/*.json", "tsconfig.json"]
   },
   // The extensions that Zed should automatically install on startup.
   //